I posted a SIM card I'd been given a while ago with £20 credit on it. It's never been used. An Ebayer asked me what the phone number for the SIM was, which I thought was a bit odd, but after checking with DP we agreed that we couldn't possibly think of a way you could somehow 'take' money from a SIM card without actually having the SIM itself.
Anyway, I was just about to list it again, and something made me put the SIM into my own phone to check the balance. Bloody good job I did, 'cos they've gone and cleared it out! It now has 1p credit on 
Will Ebay be able to do anything about this? Or should I just put it down to experience and forget about it?